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Learning goal: Define, solve and create rates and unit rates.
*6-2 Rates and Unit Rate.
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*Rate
*A ratio that compares TWO quantities with different units
*Ex: 160 beats every 2 minutes
*Unit Rate
*When a rate has a denominator of 1
*Ex: miles per hour
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*When writing rates…
*Always remember to keep the denominator of 1.
*Time on bottom
*Money ($) on top
*Think about what makes sense
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*Write each unit rate*Ex: 360 miles in 6 hours
*Ex: 160 people for 5 classes
Always write the units!!!
Examples: miles, hours, classes.
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*Example
*If it costs $2 for 8 juice boxes, what is the unit rate?
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*What’s the better buy?
*8 pound bag of dog food for $9.88
OR
*20 pound bag of dog food for $23.44
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* Your Example!! =
*Ben can type 153 words in 3 minutes. At this rate, how many words can he type in 10 minutes?
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*See Wiki En Fuego website for more help with rates and unit rates:
*http://enfuego.wikispaces.com/Math
*Ratios, Rates and Unit rates.
*http://teachertube.com/viewVideo.php?video_id=217369&title=Ratios__rates__and_unit_rates